The I-225 Rail Line under construction through the Denver suburb of Aurora is a key piece of the region's mass transit infrastructure—and a long-awaited link between the metro area's growing southeastern suburbs and Denver International Airport, one of the world's busiest hubs.
The 10.5-mile light rail line, dubbed the Aurora Line by the city, will connect the Regional Transportation District's (RTD) largely completed Southeast light rail line and its East commuter rail, scheduled to be finished in 2016. The eastern line originates in downtown Denver and will run to the airport. The I-225 rail project—its complete tab estimated at around $690 million, with $355 million in construction costs—is also slated to open in 2016.